/*
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#undef  RECOMP

#define NULL_POSITION   ((off_t)(-1))

#define EOI             (0)
#define READ_INTR       (-2)

/* Special chars used to tell put_line() to do something special */
#define UL_CHAR         '\201'          /* Enter underline mode */
#define UE_CHAR         '\202'          /* Exit underline mode */
#define BO_CHAR         '\203'          /* Enter boldface mode */
#define BE_CHAR         '\204'          /* Exit boldface mode */

#define CONTROL_CHAR(c)         (iscntrl(c))
#define CARAT_CHAR(c)           ((c == '\177') ? '?' : (c | 0100))

#define TOP             (0)
#define TOP_PLUS_ONE    (1)
#define BOTTOM          (-1)
#define BOTTOM_PLUS_ONE (-2)
#define MIDDLE          (-3)

#define A_INVALID               -1

#define A_AGAIN_SEARCH          1
#define A_B_LINE                2
#define A_B_SCREEN              3
#define A_B_SCROLL              4
#define A_B_SEARCH              5
#define A_DIGIT                 6
#define A_EXAMINE               7
#define A_FREPAINT              8
#define A_F_LINE                9
#define A_F_SCREEN              10
#define A_F_SCROLL              11
#define A_F_SEARCH              12
#define A_GOEND                 13
#define A_GOLINE                14
#define A_GOMARK                15
#define A_HELP                  16
#define A_NEXT_FILE             17
#define A_PERCENT               18
#define A_PREFIX                19
#define A_PREV_FILE             20
#define A_QUIT                  21
#define A_REPAINT               22
#define A_SETMARK               23
#define A_STAT                  24
#define A_VISUAL                25
#define A_TAGFILE               26
#define A_FILE_LIST             27
#define A_SHELL                 28
